Enable OTP 2FA

- Update SchebTwoFactorBundle to version 3
- Enable Google 2fa on the bundle
- Disallow ability to use both email and google as 2fa
- Update Ocramius Proxy Manager to handle typed function & attributes (from PHP 7)
- use `$this->addFlash` shortcut instead of `$this->get('session')->getFlashBag()->add`
- update admin to be able to create/reset the 2fa

app/config/routing.yml

@@ -51,3 +51,11 @@ craue_config_settings_modify:
 
 fos_js_routing:
     resource: "@FOSJsRoutingBundle/Resources/config/routing/routing.xml"
+
+2fa_login:
+    path: /2fa
+    defaults:
+        _controller: "scheb_two_factor.form_controller:form"
+
+2fa_login_check:
+    path: /2fa_check